Burglar-alarm or trap trigger.



.u UNITED STATES PATENT oEEIoE.

Y JAMES HENRY EAMSEY, or THA-YER, MISSOURI.

Y .BURGLAVRf-ALARM OR TRAP TBIGGER.

Specication of Letters Patent.

- Patented Dec. 5, 1905,

Application filed May 3l, 1904. Serial No. 210,596.

To all whom it may concer-n y Be it known that I, JAMES HENRY RAMSEY,

l a citizen of the United States, residing at Thayer, in the county ofOregon and State of Missouri, have invented .a new and usefulBurglar-Alarm or Trap Trigger, of which the following is a'speciiication l This inventionfrelates to triggers such as are employedfor s ringing animal-traps or operating burglar-a arms. A

The objects of the invention are to improve `and simplify theconstruction of such devices v and to increase their eiiiciency inoperation.

With these and other objects in view, as will appear from the followingdescription and claims, the invention resides-in the novel combinationand arrangement ofQparts and in the details kof construction hereinafterdescribedwith reference to the accom anying drawings, forming part ofthis spec' cation,

Figure 1 is a perspective view of the improved device arranged inconnection with a burglar-alarm. Fig. 2 is a side elevation of theimproved trigger set. Fig. 3 is a sectional view ofacombined weight andpercussion device adaptedfor use in connection with the trigger. Fig. 4is a sectional side elevation showing the safety-latch in engagementwith the end of the pivotedlatchington ue.

`T ef adapted for use in conjunction with either a burglar-alarm or ananimal-trap. In order `to facilitate a clear understanding'of theinvention, it will be described in connection with a burglar-alarmsystem, although of course the improved trigger is not to .be limited touse with only the particular system illustrated.

kThe reference-numeral' 1 indicates a door, and 2 a door-post. Fastenedto the doorpost 2 by means of screws 3 is a bracket 4, which ispreferably made in one piece for the sake of cheapness and is formedwith a hook 5, a doubled portion 6, through which the screw 3 passes,and with two integral arms 7 7, between which is pivotally mounted, bymeans of a bolt 8, a downwardly-extending trigger-arm 9. At its upperend above the ulcrum-bolt 8 the trigger-arm 9 is Jformed with a notch10. Pivoted upon one end of the bolt 8 is a safety-latch 11. A shackle12,

having one end of a pointed latching-tongue 13 pivoted between Its Vendsby means of a bolt 14, is adapted normally to iit under the hook 5, withthe pivoted end of the tongue 13 trigger oi the present invention isl inengagement with the hook andthe pointed end of said tongue itting intothe notch in the upper end of the trigger-arm 9. At the upper end oi theshackle 12 is swiveled a ring v15, to which is attached a cord, rope,chain, wire, or other suitable flexible element 16, which passes up overa pulley 17 and is attached to.v a weight "18. The weight 18 is formedwith a slot 19 to receive a detonating cap or cartridge and is providedwith a springretracted plunger 20, which is adaptedto eX- plode thedetonating-cap when the weight is permitted to drop to thefloor-orstrike against' any other solid surface.

Attached to the lower end ,of the triggerarm 9 is a piece of stringorthread 21, which l passes upthrough a suitable perforation 2 2 in thebracket 4 and is provided with a small ring 23 on its end. In settingtheburglarvalarm the small ring 23 'is fitted over a pin 24 on the door.

The operation of the alarm` after it has been set in the mannerdescribed is simple. If an attempt be made to open the door, the stringor thread 21 will pull upon the triggerarm 9, causing its notched end todisengage the pointed end oi the tongue 13 which will then spring up,causing its pivoted end to slide out from under the hook 5 and free theVshackle 12. When the shackle is freed, the

Weight drops and the detonating-cap eX- plodes to soundthe alarm. I

If the device be applied to an animal-trap, the sliding door of 4a cageor the like may be substituted for the detonatin -weight and the string21 may be-operate by any suit- Y able animal-bait.

When the device is used in 4 connection with an animal-trap and it isdesired to lock the pivoted latching-tongue against accidental movementwhile baiting'or otherwise setting the trap, the safety-latch 11 isswung upwardly over the Vtrigger-arm and into enprovement over priordevices of a similar' character. Changes in the precise constructionillus trated and described may be made within the scope of the followingclaims without departing from the spirit of the invention.

Having thus described the invention,what is claimed isl. A trigger foralarms or traps comprising a bracket, a trigger-arm pivoted thereto, ashackle having a pivoted tongue adapted to engage the trigger-arm, and asafety-latch pivoted to said bracket for engagement with the free end ofthe pivoted tongue.

2. A trigger for alarms or traps comprising a bracket, a trigger-armpivoted thereto, a weight supporting member, a pivoted tongue carried bysaid member and adapted to engage the trigger-arm, and a safety-latchpivoted to the bracket for engagement with the free end of said pivotedtongue.

3. A trigger for alarms or traps comprising a. bracket provided with ahook, a shackle having a pivoted tongue for engagement with said hook,and a trigger-arm pivoted to the bracket and adapted to engage the freeend of the pivoted tongue.

4. A trigger for alarms or traps comprising a bracket having a hook andintegral arms, a trigger-arm pivoted between the integral arms, aiiexible element for operatin T the trigger-arm, a shackle having apivote tongue engaging the hook at one end and the trigger-arm at theother, a weight connected with the shackle and a safety-latch adapted tcengage the free end of said pivoted tongue.

5. A trigger for alarms or traps, comprising a bracket having a hook atone end and a trigger ivoted at the other end thereof, and a shack ehaving a pivoted arm for engaging the trigger.

6. A trigger Jfor alarms or traps, comprising a shackle having a pivotedtongue, a weight attached to said shackle, a bracket, a trigger on saidbracket for engagement with the shackle-tongue, and a safety-latchadapted to engage the free end of the pivcted tongue.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

JAMES HENRY RAMSEY.

Witnesses:

CHAs. W. GATES, W. A. MILLER.

